Finding the Fourth Proportional to 99,378.82, 149,125.64 and 52,631.70
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Solution
The fourth proportional to 99,378.82, 149,125.64 and 52,631.70 is: 78,977.95
Step by Step Solution
- Step 1: Write the proportion equation
99,378.82 : 149,125.64 = 52,631.70 : x - Step 2: Convert to fraction form
99,378.82/149,125.64 = 52,631.70/x - Step 3: Cross multiply
99,378.82x = 149,125.64 × 52,631.70 - Step 4: Simplify right side
99,378.82x = 7,848,735,946.79 - Step 5: Solve for x
x = 7,848,735,946.79/99,378.82 - Step 6: Final answer
x = 78,977.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.